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Ploidy, sex and crossing over in an evolutionary aging model

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  • Lobo, Matheus P.
  • Onody, Roberto N.

Abstract

Nowadays, many forms of reproduction coexist in nature: Asexual, sexual, apomictic and meiotic parthenogenesis, hermaphroditism and parasex. The mechanisms of their evolution and what made them successful reproductive alternatives are very challenging and debated questions. Here, using a simple evolutionary aging model, we give a possible scenario. By studying the performance of populations where individuals may have diverse characteristics—different ploidies, sex with or without crossing over, as well as the absence of sex—we find an evolution sequence that may explain why there are actually two major or leading groups: Sexual and asexual. We also investigate the dependence of these characteristics on different conditions of fertility and deleterious mutations. Finally, if the primeval organisms on Earth were, in fact, asexual individuals we conjecture that the sexual form of reproduction could have more easily been set and found its niche during a period of low-intensity mutations.

Suggested Citation

  • Lobo, Matheus P. & Onody, Roberto N., 2006. "Ploidy, sex and crossing over in an evolutionary aging model," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 361(1), pages 239-249.
    • Handle: RePEc:eee:phsmap:v:361:y:2006:i:1:p:239-249
    DOI: 10.1016/j.physa.2005.07.009
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    References listed on IDEAS

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    1. Asare, D. K. & Sammis, T. W. & Assadian, H. & Fowler, J. L., 1992. "Evaluating three cotton simulation models under different irrigation regimes," Agricultural Water Management, Elsevier, vol. 22(4), pages 391-407, December.
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    Cited by:

    1. Hadzibeganovic, Tarik & Liu, Chao & Li, Rong, 2021. "Effects of reproductive skew on the evolution of ethnocentrism in structured populations with variable size," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 568(C).

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